Packing for collapsible tubes



April 16, 194 6. H QR; KOHLH EPP I 1 2,398,536

PACKING FOR. GOLLAPSIBLE TUBES Filed Jun 25, 1945 Inuznfor' 10 s 6 M w en m w v1 R x AH Patented Ap 16, 1946 UNITED s-TAT PACKING FORcoLLArsIBLE TUBES Henry R. Kohll1epp, Saginaw, Mich, assignor to-American Box Board Company, Grand Rapids, Mich., a corporation ofMichigan Application June 25,1945, Serial No. 601,419

" 4 Claims. (01. 229-37) The present invention relates to a packing or acontainer for collapsible tubes, made frompaper and of particularutility in protecting the tube in shipment or storage.

It is a primary objectand. purpose of the present invention to provide apacking for collapsible tubes, which may' hold many varieties of liquidor semi-liquid material and which are dispensed by collapsing the sideof the tube and forcing the material out of an end opening thereof. Withmy invention the container is made from a single substantiallyrectangular sheet of relatively thin paper stock, which when properlyscored and slotted and cut at its outer edges provides an enclosingholder or packing for the collapsible tube, very little waste ofmaterial occurring in slotting and cutting the blanks. Said packing whenapplied to the tube is adapted to be placed within a shipping containerof paper or paper board of suitable rectangular dimensions in crosssection, the tube with the packing around it being readily receivedtherein.

An understanding of the invention may be had from the followingdescription taken in connection with the accompanying drawing, in which,

Fig. l is a plan of blank from which the collapsible tube packing ismade.

Fig. 2 is a perspective view showing one-half of the blank in itscompleted shape, the other not yet having been folded, and

Fig. 3 is a somewhat enlarged end elevation showing a collapsible tubewithin the completed packing of my invention.

Like reference characters refer to like parts in the different figuresof the drawing.

The blank of suitable paper stock of the requisite thickness, and ofgenerally rectangular alined rectangular sections "I, integrallyconnected at their inner ends and scored or otherwise processed forbending transversely at said meeting ends on the line 2. Outwardly theblank is slotted to each side edge, providing two narrow slots 3, oneextending from each end of the line of bending 2 shown.

The rectangular sections I at their side edges are defined by parallelspaced longitudinal scored or bending lines 4, at the outer side of eachof which is a triangular section5, widest at its outer end andprogressively decreasing in size to a point which points reachsubstantially the inner ends of the slots 3. The outer boundary of thesection Sis provided by a scored or bending line 6 located at an acuteangle to its adjacent line 4 as shown.

Parallel to each of the lines 6 is a scored or form, at its centerlongitudinally thereof has two bending line I, reaching from each end ofthe blank and each side of the intermediate sections 1 and 5 to theslots 3, thereby providing substanthe outer end, edges of the sections 8and 9 are perpendicular to shown. v t

In the use of the packing, the two sections 9 at one side of the slots 3are bent at right angles to the adjacent sections 8 about the lines I,and the sections 8 are bent at right angles to the triangular sections 5bringing the two sections 9 into overlapping relation with respect toeach other as in Fig. 2. Said sections 9 in such overlapped relation andbrought with their outer edges in parallelism to the bending lines Iform. one-half of a packing, in which the center section I is presseddownwardly and formed into a concave trough l a (Fig. 2) between thetapered upper portions 5. It is apparent that the recessed portion la,provided by the downwardly concaved shaping of the section I,progressively decreases as to its depth from the outer free end towardthe inner end where it is connected at the bending line 2 to the alinedsection Ia of the other half of the packing. The collapsible tube [0 maybe placed within the trough-like recess indicated at 1a with its closedend adjacent the transverse scored or bending line 2. The other half ofthe packing may be bent on the lines 4, 6 and 1 into a like formationand then turned approximately about the transverse line 2 so as toenclose the body of the collapsible tube I0, with only the delivery endof the tube exposed, as shown in Fig. 3.

The packing thus supplied to the tube is designed to be located in acontainer of the proper dimensions in length and rectangular in crosssection.

The construction described is simple, is ecothe bending lines 6 and 11as nomical to make with minimum loss of material, and provides a verysatisfactory protection and i an insurance against damage to thethin-wall flexible tubes which it is designed to receive.

The invention is defined in the appended claims and is to be consideredcomprehensive of all forms of structure coming within their scope.

I claim:

1. In a device of the class described, a two part container of thinmaterial including, two intermediate alined elongated sections, onefoldable over the other, each of said sections at its sively decreasingin depth from its outer to its inner end, triangular sections extendingoutwardly one from each edge of said intermediate sections, sidesections extending at right angles from said triangular sections, andoverlapping edge sections located at right angles to said side sections,whereby when one of the intermediate sections is turned about themeeting juncture of said two intermediate sections a recess forreceiving a collapsible tube is provided, one-half of said recess beingin each of the two parts of the container.

2. A blank for a packing for flexible tube .con-t tainers, formed ofthin material having a generally rectangular outline, said blank midwaybetween its ends having transverse alined slots one from each side edgeextending inwardly for a distance, said blank having bending lineslengthwise thereof at the inner ends of said slots, said blank alsohaving a bending line between the inner ends of said slots, otherbending lines disposed one at anacute angle to each of thefirst'longitudinal bending lines extending outwardly from the endsofsaid slots, and additional bending lines one parallel to each of thelast mentioned bending lines, said material of the blank being bendableabout said various lines to form ah enclosing packing open at one endfor outer end being of concaved shape and progres- 3. A container for acollapsible tube comprising, upper and lower parts integrally connectedat one end and foldable one over the other, each of said parts havingtwo outer overlapping sections to form the bottom and top of thecontainer, vertical sections extending at righ angles from saidoverlapping sections toward each other, inwardly turned horizontalsections of triangular form in contact engagement with each other andintermediate trough-like sections disposed in opposition to each other,the depth of said last mentioned sections being greatest at their outerends and becoming progressively wider and shallower toward their innerends.

4. A packing container for a flexible collapsible tube comprising, upperand lower members made of paper material, one superimposed over theother and having longitudinal trough-like recesses shaped to receivesaid tube therein, each of said members having wall of triangular formcontinued one outwardly from :each edge of said trough-like recesses fora short distance, then extend for a short distance at right angles intosides, and then bent at right angles outside of its associatedtrough-dike recess and overlapping each other, said intermediatetrough-like portions of aid parts having an integral connection at theirinnerends and bendable transversely at said inner ends to located oneover the other.

the reception of said collapsible tube container. 3 we HENRY R.KOHIJ-IEPP.

